| Title: | Occurrence of volatile contaminants in recycled poly(ethylene terephthalate) by HS-SPME-GCxGC-QTOF-MS combined with chemometrics for authenticity assessment of geographical recycling regions |
| Author(s): | Dong B; Wu X; Wu S; Li H; Su QZ; Li D; Lin Q; Chen S; Zheng J; Zhu L; Zhong HN; |
| Address: | "National Reference Laboratory for Food Contact Material (Guangdong), Guangzhou Customs Technology Center, Guangzhou 510075, China. Key Laboratory of Product Packaging and Logistics, Packaging Engineering Institute, Jinan University, Zhuhai 519070, China; Working Group on Sustainable Food Contact Materials, Guangzhou 510070, China. National Reference Laboratory for Food Contact Material (Guangdong), Guangzhou Customs Technology Center, Guangzhou 510075, China; Working Group on Sustainable Food Contact Materials, Guangzhou 510070, China. China National Center for Food Safety Risk Assessment, Beijing 100022, China. Electronic address: zhulei@cfsa.net.cn. National Reference Laboratory for Food Contact Material (Guangdong), Guangzhou Customs Technology Center, Guangzhou 510075, China; Working Group on Sustainable Food Contact Materials, Guangzhou 510070, China; State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China. Electronic address: marco.zhong@iqtc-fcm.com" |
| DOI: | 10.1016/j.jhazmat.2022.130407 |
| ISSN/ISBN: | 1873-3336 (Electronic) 0304-3894 (Linking) |
| Abstract: | "A comparison was performed on various methods detecting the volatile contaminants (VCs) in recycled poly(ethylene terephthalate) (rPET) flakes, the results demonstrated that head-space solid phase micro-extraction combined with comprehensive two-dimensional gas chromatograph-tandem quadrupole-time-of-flight mass spectrometry (HS-SPME-GCxGC-QTOF-MS) was a sensitive, effective, accurate method, and successfully applied to analyze 57 rPET flakes collected from different recycling plants in China. A total of 212 VCs were tentatively identified, and the possible source were associated with plastic, food, and cosmetics. 45 VCs are classified as high-priority compounds with toxicity level IV or V and may pose a risk to human health. Combined chemometrics for further analysis revealed that significant differences among these three geographical recycling regions. 6, 7, and 6 volatile markers were chosen based on VIP values and S-plot among plant1 plant 2 and plant 3, respectively. The markers differed significantly between recycled rPET samples in three geographical recycling regions based on chemometrics analysis. The initial classification rate and cross-validation accuracy were 100% on the identified VCs. These significant differences demonstrate that a systematic study is needed to obtain a comprehensive data on the contamination of rPET for food contact applications in China" |
| Keywords: | Humans Gas Chromatography-Mass Spectrometry/methods *Polyethylene Terephthalates/chemistry Chemometrics Solid Phase Microextraction/methods Ethylenes *Volatile Organic Compounds/analysis Food contact materials HS-SPME-GCxGC-QTOF-MS Recycled polyethylene t; |
| Notes: | "MedlineDong, Ben Wu, Xuefeng Wu, Siliang Li, Hanke Su, Qi-Zhi Li, Dan Lin, Qinbao Chen, Sheng Zheng, Jianguo Zhu, Lei Zhong, Huai-Ning eng Research Support, Non-U.S. Gov't Netherlands 2022/11/30 J Hazard Mater. 2023 Mar 5; 445:130407. doi: 10.1016/j.jhazmat.2022.130407. Epub 2022 Nov 15" |
